Results 41 to 50 of about 149,014 (247)

Morphological Distribution of Galaxies in Some Nearby Clusters

Open Astronomy, 2019
We study the morphological distribution of galaxies in some nearby clusters, using the Sloan Digital Sky Survey – Data Release 9 (SDSS-DR9). The segregation between early-type galaxies and late-type ones is investigated in g – r / u – g color space ...
Rasheed Mariwan A., Mohammad Khalid K.
doaj   +1 more source

Galaxy Cluster Environments of Radio Sources

, 2011
Using the Sloan Digital Sky Survey (SDSS) and the FIRST (Faint Images of the Radio Sky at Twenty Centimeters) catalogs, we examined the optical environments around double-lobed radio sources. Previous studies have shown that multi-component radio sources
Abazajian, Ascasibar, Bahcall, Blanc, Blanton, Blanton, Blanton, Blanton, Blanton, Blanton, Bower, Bradač, Brodwin, Budavári, Burns, Clarke, Condon, Croft, Csabai, Daddi, Dalton, Deltorn, Dickinson, D’Onghia, Elizabeth L. Blanton, Fanaroff, Gal, Garilli, Gladders, Gladders, Gladders, Gómez, Ivezić, Jee, Joshua D. Wing, Koester, Koester, Krick, Lin, Lin, Lin, Lumsden, Martini, McMahon, Menanteau, Miller, Oklopčić, Ostrander, Owen, Oyaizu, Proctor, Reiprich, Roettiger, Sarazin, Schlegel, Smith, Smolčić, Vanderlinde, Vikhlinin, Voges, Wen, York, Zirbel, Zwicky   +63 more
core   +1 more source

A catalog of Nearby Poor Clusters of Galaxies [PDF]

, 1999
A catalog of 732 optically selected, nearby poor clusters of galaxies covering the entire sky north of $\rm -3^{\circ}$ declination is presented. The poor clusters, called WBL clusters, were identified as concentrations of 3 or more galaxies with ...
Bahcall J. N., Bhavsar S. P., Bhavsar S. P., Christen Loken, Jack O. Burns, Mark Bliton, Michael J. Ledlow, Patricia Bornmann, Richard A. White, Suketu P. Bhavsar   +9 more
core   +2 more sources

Cosmology with Clusters of Galaxies [PDF]

, 2008
In this Chapter I review the role that galaxy clusters play as tools to constrain cosmological parameters. I will concentrate mostly on the application of the mass function of galaxy clusters, while other methods, such as that based on the baryon fraction, are covered by other Chapters of the book.
openaire   +4 more sources

Galaxies and subhaloes in ΛCDM galaxy clusters [PDF]

Monthly Notices of the Royal Astronomical Society, 2004
6 pages, 2 figures, accepted for publication in Monthly Notices Letters.
G. De Lucia, Adrian Jenkins, Liang Gao, Simon D. M. White   +3 more
openaire   +4 more sources

Statistics of Galaxy Clustering [PDF]

, 2006
In this introductory talk we will establish connections between the statistical analysis of galaxy clustering in cosmology and recent work in mainstream spatial statistics. The lecture will review the methods of spatial statistics used by both sets of scholars, having in mind the cross-fertilizing purpose of the meeting series.
Vicent J. Martínez, Enn Saar
openaire   +3 more sources

INTERACTIONS OF GALAXIES IN THE GALAXY CLUSTER ENVIRONMENT [PDF]

The Astrophysical Journal, 2009
We study the dependence of galaxy properties on the clustercentric radius and the environment attributed to the nearest neighbor galaxy using the SDSS galaxies associated with the Abell galaxy clusters. We find that there exists a characteristic scale where the properties of galaxies suddenly start to depend on the clustercentric radius at fixed ...
Changbom Park, Ho Seong Hwang
openaire   +3 more sources

Galaxy Activity in Merging Binary Galaxy Clusters

, 2009
We present the results of a study of galaxy activity in two merging binary clusters (A168 and A1750) using the Sloan Digital Sky Survey (SDSS) data supplemented with the data in the literature.
Adelman-McCarthy, Baldwin, Beers, Beers, Beers, Bekki, Belsole, Blake, Blanton, Blanton, Buote, Burns, Caldwell, Caldwell, Castander, Choi, Cortese, Cortese, De Propris, Donnelly, Dressler, Dressler, Dressler, Dressler, Fadda, Fasano, Ferrari, Forman, Fujita, Fukugita, Girardi, Girardi, Gnedin, Goto, Gunn, Gunn, Hallman, Ho Seong Hwang, Hogg, Hwang, Hwang, Ivezić, Johnston-Hollitt, Jones, Kapferer, Kennicutt, Kewley, Kronberger, Lupton, Markevitch, Martini, Mathis, Mauduit, Miller, Myung Gyoon Lee, Park, Park, Park, Pier, Poggianti, Poggianti, Poole, Quintero, Ramírez, Ricker, Ricker, Schlegel, Smith, Stoughton, Struble, Takizawa, Tegmark, Tomita, Tran, Tran, Tremonti, Tucker, Ulmer, Uomoto, Yan, Yang, Yang, Yang, York, Zabludoff   +84 more
core   +1 more source

Galaxy Clusters: Oblate or Prolate? [PDF]

, 1999
It is now well known that a combined analysis of the Sunyaev-Zel'dovich (SZ) effect and the X-ray emission observations can be used to determine the angular diameter distance to galaxy clusters, from which the Hubble constant is derived.
Asantha R. Cooray, Binney, Binney, Birkinshaw, Branch, Cavaliere, Cooray, Gunn, Hughes, Inagaki, Lucy, Merritt, Mohr, Perlmutter, Riess, Roettiger, Ryden, Ryden, Silk, Silverman, Stark, Sulkanen, Sunyaev, Vio   +23 more
core   +4 more sources

The Clustering of Galaxies

Publications of the Astronomical Society of the Pacific, 1961
Inspecti of photographs obtained with wide-angle telescopes sho' that the distribution of galaxies over the sky is distinctly nt miform. The observed dumpiness of the distribution of ga ies is believed to be due to a tendency for galaxies to occur in sters. A cluster of galaxies is usually regarded as a distinct >e of aggregate of matter.
openaire   +4 more sources